Suntech modules have received the VDE Quality-Tested certification, attesting that the quality of Suntech modules exceed existing industry standards.

The VDE created its VDE Quality-Tested seal of approval to recognize a level of quality control that goes beyond existing standards in the PV industry when validating PV modules. Low rates of degradation and high safety standards are essential aspects of attaining VDE certification.

Compared to other industry standards, such as the IEC61215 and IEC61730-2, the VDE Quality-Tested seal relies on a more rigorous examination of performance capabilities.